Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Steven P. Sylvester"'
Autor:
Hermann F. Jungkunst, Felix Heitkamp, Sebastian Doetterl, Steven P. Sylvester, Mitsy D. P. V. Sylvester, Vanessa Vetter, Shafique Maqsood, Thorsten Zeppenfeld, Michael Kessler, Sabine Fiedler
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-10 (2023)
Abstract Soils contain significantly more carbon than the atmosphere, hence we should understand how best to stabilize it. Unfortunately, the role of human interventions on soil organic carbon (SOC) persistence in the Anthropocene remains vague, lack
Externí odkaz:
https://doaj.org/article/2a1c46e9b73645f6b202f28819e8b64d
Autor:
Paul M. Peterson, Steven P. Sylvester, Konstantin Romaschenko, Robert J. Soreng, Patricia Barberá, Alejandro Quintanar, Carlos Aedo
Publikováno v:
PhytoKeys, Vol 167, Iss , Pp 57-82 (2020)
Based on a molecular DNA phylogeny of three plastid (rpl32-trnK, rps16 intron, and rps16-trnK) and nuclear ITS regions investigating 32 species of Agrostidinae, we describe two new genera, Agrostula gen. nov. with a single species and Alpagrostis gen
Externí odkaz:
https://doaj.org/article/eae996f262b747cfbc8b1a780ca03ce5
Publikováno v:
Check List, Vol 16, Iss 5, Pp 1347-1353 (2020)
The grass Agrostis meyenii Trin. (Poaceae, Agrostidinae) is newly recorded from Peru and is found in high-Andean puna grasslands of the departments of Ancash, Ayacucho, and Huánuco, marking the northernmost known limit of this species. A revised spe
Externí odkaz:
https://doaj.org/article/983d891f8a7f4643a4f7ae2ea458b3cc
Publikováno v:
PhytoKeys, Vol 165, Iss , Pp 27-50 (2020)
Four species of Poa L. are newly reported for sub-Saharan Africa and southern Africa, Poa compressa L., P. iconia Azn., P. infirma Kunth and P. nemoralis L. This is the first report of P. iconia from Africa. Vouchers at PRE of P. bulbosa L. all belon
Externí odkaz:
https://doaj.org/article/3472e624cee44e26a77f165403f3ca3e
Autor:
Meng Li, Steven P. Sylvester, Zhang-Pei Wang, Yi-Da Pei, Xin-Fen Gao, Yuan Zhao, Wen-Qi Jiang
Publikováno v:
PhytoKeys, Vol 166, Iss , Pp 29-39 (2020)
Sorbus harrowiana (≡Pyrus harrowiana), previously considered a synonym of Sorbus insignis (≡Pyrus insignis) in the Flora of China, is re-instated here and shown to be distinct from S. insignis, based on morphometric analysis, coupled with herbari
Externí odkaz:
https://doaj.org/article/b8b21bc1b5e2469fb8656cd3f3bc274d
Publikováno v:
PhytoKeys, Vol 162, Iss , Pp 45-69 (2020)
We present taxonomic notes on the Festuca caprina complex from southern Africa that includes description and illustration of the new species F. drakensbergensis from the Drakensberg Mountain Centre of Floristic Endemism of South Africa and Lesotho. F
Externí odkaz:
https://doaj.org/article/7571fcbb32e440d2a60db1e98c5bd76d
Publikováno v:
PhytoKeys, Vol 151, Iss , Pp 107-160 (2020)
We present taxonomic notes, including updated species descriptions and images, for the nine species of Agrostis and one species of Podagrostis found in páramos of Departamento Boyacá, Colombia (A. boyacensis, A. breviculmis, A. capillaris, A. folia
Externí odkaz:
https://doaj.org/article/fd7feacd704a44a994272f22da140ce4
Autor:
Steven P. Sylvester, Paul M. Peterson, Konstantin Romaschenko, William J. Bravo-Pedraza, Lia E. Cuta-Alarcon, Robert J. Soreng
Publikováno v:
PhytoKeys, Vol 148, Iss , Pp 21-50 (2020)
Based on morphological study and corroborated by unpublished molecular phylogenetic analyses, five grass species of high-mountain grasslands in Mexico, Central and South America, Agrostis bacillata, A. exserta, A. liebmannii, A. rosei, and A. trichod
Externí odkaz:
https://doaj.org/article/4455a7603d44452fbb8aa51e35eb33ef
Autor:
Steven P. Sylvester, Robert J. Soreng, William J. Bravo-Pedraza, Lia E. Cuta-Alarcon, Diego Giraldo-Cañas, Jose Aguilar-Cano, Paul M. Peterson
Publikováno v:
PhytoKeys, Vol 122, Iss , Pp 29-78 (2019)
Calamagrostis (syn. Deyeuxia), as traditionally circumscribed, is one of the most speciose genera from páramo grasslands of northwest South America and southern Central America and often dominates these high-elevation habitats. However, it remains d
Externí odkaz:
https://doaj.org/article/eb3d31fedccc43ee9f12ca35067f9113
Autor:
Steven P. Sylvester, Felix Heitkamp, Mitsy D. P. V. Sylvester, Hermann F. Jungkunst, Harrie J. M. Sipman, Johanna M. Toivonen, Carlos A. Gonzales Inca, Juan C. Ospina, Michael Kessler
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
Abstract What would current ecosystems be like without the impact of mankind? This question, which is critical for ecosystem management, has long remained unanswered due to a lack of present-day data from truly undisturbed ecosystems. Using mountaine
Externí odkaz:
https://doaj.org/article/d0d6a51d35c64955a7ab10e55eee013d